Petrol likely hasn't been economically viable since the early 1950s. Right now its ultra low sub theshold permanet economic of 13% means people are being worked to death and everything is hollowing out. It literally requires half a trillion a year in direct state subsidies (2015) just to stay afloat- its been bankrupt since the 50s and is the greatest welfare queen in history. The only thing with lower economic efficiency that also incredibly would actually be more poluting in practice as intended is hydrogen. And this is of course a lie told by wealthy people right now who use petrol to keep people enslaved, told so they can keep their wealth and power and continue the process of making the slavery deeper and more perfect. Which brings us to Nikola Motors, its Semi like Toyota's and all others of these scams is an utter piece of s__t! A slave wagon. No one who can think wants to enrich a slaver.